Name: XPS Foam Sandwich Panel
Brand: RaxPanel

XPS Foam Sandwich Panel

XPS Foam Sandwich Panels combine an extruded polystyrene (XPS) foam core with rigid skin layers—typically fiberglass reinforced plastic (FRP), aluminum, or plywood—bonded through vacuum compression molding. The closed-cell XPS core delivers thermal insulation with conductivity between 0.024 and 0.034 watts per meter-kelvin, compressive strength from 0.1 to 1 megapascal, and density of 30 to 50 kilograms per cubic meter. Water absorption remains below 1 percent, while the material performs reliably from -50 to +80 degrees Celsius.

FRP skins provide high strength, rigidity, and corrosion resistance along with waterproof and electrical insulation properties. Aluminum skins offer lightweight, recyclable construction with optional fluorocarbon coatings for enhanced durability. Both skin types bond to the core using high-quality adhesives, ensuring uniform adhesion and structural integrity.

These panels serve construction applications including wall systems, roofing, and partitions where thermal insulation is required. Transportation industries use them for refrigerated truck bodies, recreational vehicles, and marine vessels. Cold storage facilities rely on them for temperature-stable walls and roofs, while industrial settings benefit from their customizable dimensions—widths to 3.2 meters, lengths to 12 meters, and thicknesses from 10 to 120 millimeters—with CNC (Computer Numerical Control) machining available for precise fabrication.

Professional XPS Foam Sandwich Panel Manufacturer

As a professional manufacturer of XPS sandwich panels based in Hebei, China, RaxPanel brings over 20 years of expertise to the production of laminated composite panels. XPS foam sandwich panels are renowned for their superior insulation and structural performance, combining lightweight design with high strength. The core material, extruded polystyrene foam, features a closed-cell structure that provides low thermal conductivity, minimal water absorption, and excellent compression resistance.

Our panels are fully customizable in dimensions, with widths up to 3.2m and lengths up to 12m, and can be paired with various skin materials like FRP, aluminum, or plywood. Utilizing vacuum compression molding and high-quality adhesives, we ensure robust bonding without delamination, thanks to the good compatibility between XPS foam and the glue system.

With in-house R&D and manufacturing capabilities, RaxPanel produces over 1500 m² daily, serving a global clientele in more than 30 countries. These versatile panels are ideal for applications in construction, transportation, refrigeration, and marine industries, delivering reliable thermal insulation and durability. Our commitment to quality, expertise, and customer satisfaction makes us your trusted partner for custom composite solutions. Contact us today to discuss your project needs and experience the exceptional quality of RaxPanel’s XPS Sandwich Panel.

Parameter	Specification
Skin Material	Fiberglass Reinforced Plastic (FRP), Aluminum, Plywood, Stainless Steel, etc.
Core Material	XPS (Extruded Polystyrene) Foam
Width	≤ 3.2 m
Total Thickness	10 – 120 mm
Length	≤ 12 m
Core Density	30 – 50 kg/m³
Skin Color	RAL Color Series
Processing	Vacuum compression bonding, CNC machining
Compression Strength	0.1 – 1 MPa
Thermal Conductivity	0.024 – 0.034 W/m·K
Water Absorption	≤ 1 %
Operating Temperature	-50 to +80 °C
Closed Cell Rate	≥ 99 %
Performance Treatment	Anti-UV, Flame Retardant, Antistatic

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XPS Foam Sandwich Panel Selection & Engineering Guide

XPS Foam Sandwich Panel combines high-strength composite skins with an engineered core to deliver superior thermal insulation, structural rigidity, and long-term durability for commercial applications.

💡 Pro Tip: Delamination Prevention Under Thermal Cycling
At RaxPanel, we utilize automated vacuum lamination with high-performance two-component polyurethane adhesives to ensure a bond strength that absorbs differential thermal expansion without micro-delamination.

1. How to Choose the Right Skin Alloy and Thickness

Outer skin selection governs mechanical impact resistance, corrosion barriers, and structural stiffness across different operating environments.

2. How Well Does the Core Insulate and Withstand Heavy Loads?

The core material acts as the web in an I-beam structure, handling shear stress and maintaining thermal R-value insulation:

Performance Metric	RaxPanel Engineering Standard	Application Advantage
Skin Spec	Engineered Aluminum / Composite Skin (0.3mm – 2.0mm / 1.0-3.0mm)	High tensile and impact resistance against road debris
Thermal Conductivity	~ 0.022 – 0.035 W/m·K	Consistent thermal R-value energy savings
Adhesive Layer	Two-component PU / Epoxy Adhesive	Delamination-free performance under thermal freeze-thaw cycles

3. Which Surface Finish Will Protect Your Panels for 20+ Years?

Factory roller coating specifies long-term color stability, UV protection, and resistance against industrial pollutants or marine salt spray.

4. How Fire-Safe and Soundproof Are These Panels?

🛡️ Compliance & Acoustic Isolation:

Fire Safety: Formulations comply with EN 13501-1 Class B-s1,d0 and GB8624 Class B1 building fire safety standards.
Sound Damping: Composite core attenuates noise transmission by 24 dB to 30 dB relative to solid metal sheets.

5. Where Are XPS Foam Sandwich Panels Most Commonly Installed?

🚚 Vehicle Bodies & Trailers

Lightweighting and high-impact structural strength for mobile fleets.

🏢 Cold Rooms & Building Envelopes

Thermal R-value insulation and moisture-proof building enclosures.

6. How to Cut, Groove, and Seal Edges During Installation

Panels process easily on-site using standard CNC machinery, routers, or specialized edge profiles for airtight moisture sealing.

Frequently Asked Questions (FAQS)

1. What are the standard panel thicknesses, maximum lengths, and width options available for XPS Foam Sandwich Panels?

Standard panel thicknesses range from 10mm up to 150mm. Standard widths include 1000mm, 1220mm, and 1500mm, with maximum single-sheet lengths up to 5800mm (5.8m) to fit ocean freight container shipping dimensions.

2. What are the primary engineering benefits of using XPS Foam Sandwich Panels?

XPS Foam Sandwich Panels deliver an exceptional stiffness-to-weight ratio, rot-proof moisture resistance, reliable thermal insulation, and dynamic fatigue endurance for high-stress applications.

3. How do these composite panels perform under high humidity and outdoor weathering?

The closed-cell core prevents water logging and condensation absorption, while pre-painted skins provide a 20+ year weatherability barrier against UV degradation.

4. What fire safety ratings and quality certifications do these composite panels meet?

Flame-retardant formulations meet EN 13501-1 Class B-s1,d0 and GB8624 Class B1 fire performance standards. Manufacturing quality is governed under ISO9001 management systems, with raw material performance verified under SGS and CE testing.

5. What surface coating options are available for exterior UV protection?

70% PVDF Fluorocarbon Coating PVDF coating provides a 20+ year exterior weatherability warranty against UV fading and acid rain. FEVE offers high gloss retention, while PE coating is cost-effective for indoor partitions.

6. Can these composite panels be CNC grooved, bent, or edge-sealed on-site?

Yes. Pre-painted skins can be V-grooved at 90° or 135° on the reverse side using standard CNC routers or hand tools, allowing manual edge folding into architectural cassettes without surface paint cracking.

7. How are large panel shipments packaged to prevent freight damage during ocean transit?

Panels are packed with protective PE film on both skins, separated by inter-sheet foam layers, and secured on heavy-duty export wooden pallets or CKD steel crates to prevent shipping damage during 20ft and 40ft container freight.